4003044649 has 2 divisors, whose sum is σ = 4003044650. Its totient is φ = 4003044648.

The previous prime is 4003044607. The next prime is 4003044653. The reversal of 4003044649 is 9464403004.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3438649600 + 564395049 = 58640^2 + 23757^2 .

It is a cyclic number.

It is not a de Polignac number, because 4003044649 - 2²⁷ = 3868826921 is a prime.

It is not a weakly prime, because it can be changed into another prime (4003044949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2001522324 + 2001522325.

It is an arithmetic number, because the mean of its divisors is an integer number (2001522325).

Almost surely, 2^4003044649 is an apocalyptic number.

It is an amenable number.

4003044649 is a deficient number, since it is larger than the sum of its proper divisors (1).

4003044649 is an equidigital number, since it uses as much as digits as its factorization.

4003044649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 4003044649 is about 63269.6186885933. The cubic root of 4003044649 is about 1587.8037064091.

The spelling of 4003044649 in words is "four billion, three million, forty-four thousand, six hundred forty-nine".